Mar 15, 2021 · Cosmelan peel ingredients. Cosmetic depigmentation is made up of two phases. The first stage uses the Cosmelan 1 and is applied at the doctor’s office. Ingredients of this cosmetic cream are azelaic acid, kojic acid, phytic acid, ascorbic acid, titanium dioxide, and acid arbutine. The first step, thorough cleaning, must be done.